| 光纤时间传输及相位补偿 |
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| 引用本文： | 梁双有,张健康,李立中.光纤时间传输及相位补偿[J].时间频率学报,2008,31(2). |
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| 作者姓名： | 梁双有 张健康 李立中 |
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| 作者单位： | 1. 中国科学院国家授时中心,陕西,西安,710600
2. 西安电子科技大学,陕西,西安,710071 |
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| 基金项目： | 国家自然科学基金资助项目
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| 摘 要： | 介绍了国外几种利用光纤进行时间频率传递的方法和经验.对无补偿光纤时间频率传递方法、双向时间频率传递方法、光学机械温度补偿方法及电子共轭相位补偿方法作了较详细的描述.光纤时延主要随温度而变化,在200 km以内,时延的日变化为几纳秒,月变化为十几纳秒.在50 km内利用光纤传输100 MHz频率信号时,在不补偿情况下频率稳定度为: 3×10-14/s,1×10-15/d;光学补偿后的频率稳定度可达到1.5×10-14/s,1×10-17/d.电子共轭相位补偿后,温度变化20℃引起的相位变化降低了45倍.光纤传输对短期频率稳定度影响较小,对日及更长期的频率稳定度影响较大.
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| 关 键 词： | 光纤 传递方法 时间-频率 相位补偿 |
Time-Frequency Transfer via Optic Fiber and Phase Compensation |
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| LIANG Shuang-you,LI Li-zhong,ZHANG Jian-kang.Time-Frequency Transfer via Optic Fiber and Phase Compensation[J].Journal of Time and Frequency,2008,31(2). |
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| Authors: | LIANG Shuang-you LI Li-zhong ZHANG Jian-kang |
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| Abstract: | Some methods and experiences on time-frequency transfer via optic fiber are introduced.The methods for time-frequency transfer without phase compensation,two-way time-frequency transfer,temperature compensation via optic-mechanics and electronic conjugated phase compensation are described in detail.The time delay in optic fiber transfer changes mainly with temperature.Within a distance of 200 km,the changes of time delay are a few nanoseconds for one day and ten-odd nanoseconds for one month.If a 100 MHz si... |
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| Keywords: | optic fiber transfer methods time-frequency phase compensation |
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